Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   6284 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

VNDCONFIG(8)		  BSD System Manager's Manual		  VNDCONFIG(8)

NAME
     vndconfig - configure vnode devices

SYNOPSIS
     vndconfig [-f] [-s] [-u unit] file name
     vndconfig [-c] [-u unit]

DESCRIPTION
     Vndconfig associates a regular file with a vnd(4) pseudo disk unit. The
     regular file provides the backing store for the the vnd(4) pseudo disk.
     The user immutable flag is set on the regular file to prevent realloca-
     tion of the blocks being used by the vnd(4) pseudo disk.

     The options are as follows:

     -c	     If no partitions on the pseudo disk unit are open the unit will
	     be cleared.  The user immutable flag on the regular file which
	     was providing backing store for the pseudo disk will also be
	     cleared.

     -f	     If the vnd(4) pseudo disk is not cleared before the system re-
	     boots the user immutable bit will be left set. The option is used
	     to force clearing of the user immutable bit before configuring
	     the device. This option will likely always be required when set-
	     ting up vnd(4) pseudo disks as part of normal boot in rc(8).

     -u	     Specify the vnd(4) unit which is being initialized or cleared.
	     This defaults to 0.

     -s	     This flags is used to indicated that the pseudo disk being con-
	     figured is read-only or is only going to be used as a swap de-
	     vice. If a vnd(4) pseudo disk is going to have a file system
	     built in it the mapping of logical blocks within the regular file
	     to device blocks must be done at open time to prevent dead locks.
	     This pre-mapping need not be done for vnd(4) pseudo disks which
	     are only going to be used as a swap device or will only be mount-
	     ed read-only such as iso9660 CD-ROM images.

FILES
     /dev/vnd	      vnd(4) configuration device
     /dev/vnd*[a-h]   block vnd(4) pseudo disk devices
     /dev/rvnd*[a-h]  raw vnd(4) pseudo disk devices

EXAMPLES
     vndconfig -f -s /usr/swapfile
	     Create vnd(4) pseudo disk unit 0 for use as a swap file from reg-
	     ular file /usr/swapfile. This is a typical entry found in /etc/rc
	     rc(8) to set up a vnd(4) pseudo disk for use by swapon(8).

     vndconfig -u 1 /tmp/floppyimage
	     Build vnd(4) pseudo disk unit 1 from regular file /tmp/floppyim-
	     age.  Vnd(4) unit one can then be used to mount the floppy image
	     as if it were on a floppy disk being accessed through fd(4).

     vndconfig -c
	     Clear vnd(4) unit 0.

     vndconfig -c -u 0
	     Clear vnd(4) unit 0.

     vndconfig -c -u 1
	     Clear vnd(4) unit 1.

SEE ALSO
     cd9660(8),	 fd(4),	 mount(8) mount_cd9660(8),  vnd(4),  rc(8),  swapon(8)

4th Berkeley Distribution      October 18, 1996				     2

                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 

Vote for polarhome